CN103383077A - High-sealing light-emitting diode (LED) lamp - Google Patents
High-sealing light-emitting diode (LED) lamp Download PDFInfo
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Abstract
The invention relates to a high-sealing light-emitting diode (LED) lamp. The high-sealing LED lamp comprises a lamp housing (1), a substrate (2), a light-emitting module (3), a lamp shade (4), a radiator (5), a through hole (6), an o-shaped seal ring (7) and a press ring (8). The o-shaped seal ring is formed by reasonable compatibility of rubber, polytetrafluoroethylene micro powder, molybdenum disulfide, sulfur, an accelerant, reinforcing agent powder, a plasticizer, an active agent, an anti-aging agent and a coupling agent. A preparation method for the high-sealing LED lamp comprises the steps of evenly mixing the o-shaped seal ring raw materials according to parts by weight, injecting the raw materials into a metal die to perform static pressure shaping, feeding the raw materials into a high-temperature sintering furnace to perform sintering, cooling the raw materials in a vacuum device to room temperature after sintering is finished so as to obtain the o-shaped seal ring, enabling the o-shaped seal ring to be used between the lamp housing (1) and the lamp shade (4) after aftertreatment, and obtaining the high-sealing LED lamp. The high-sealing LED lamp is good in waterproof dustproof effect, excellent in heat resistance, ageing resistance, corrosion resistance, weather resistance and medium resistance and the like and long in service life.
Description
Technical field
The present invention relates to a kind of LED lamp, relate in particular to a kind of LED lamp of high-seal.
Background technology
The LED light fixture has the advantage of energy-saving and environmental protection, has become main trend in the development of light fixture industry.Present LED lamp is applicable to traditional field more, has for water proof and dust proof in the environment for use of requirement, and the LED lamp that technology is arranged now may not be very applicable, and the LED lamp of prior art is shorter service life in humidity or the more environment of dust like this.
Preparation about the LED lamp of high-seal has been reported in prior art.As Chinese invention patent (publication number: CN102798025A) relate to a kind of LED bulb lamp with good seal performance.This bulb forms and comprises support, and support connection lamp housing, bottom connect lamp holder, the top connects the LED substrate with one group of LED lamp, and substrate connects the hemispherical lampshade by buckle.And between lamp housing and LED substrate, sealing ring is housed, between lamp housing and support, sealing ring is housed, sealing ring snaps in groove, and groove is positioned at the connecting portion of support and lamp housing.This LED lamp increases aspect water proof and dust proof really, but the performances such as the heat resistance of the sealing ring of this LED lamp, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium are not high, has greatly affected the service life of LED lamp.
Summary of the invention
The present invention is directed to the existing defective of prior art, provide a kind of energy water proof and dust proof, the excellent performances such as heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium, the LED lamp of the high-seal of long service life.
the LED lamp of a kind of high-seal of the present invention, comprise lamp housing (1), substrate (2), be arranged on the LED light emitting module (3) on substrate (2), lampshade (4) and be arranged on radiator (5) under substrate (2), be equipped with the through hole (6) that the power supply source line passes on described substrate (2) and radiator (5), it is characterized in that: be provided with zero RunddichtringO (7) between described lamp housing (1) and lampshade (4), and be provided with between described lampshade (4) and lamp housing (1) for lampshade (4), zero RunddichtringO (7), the pressure ring (8) of the compression of lamp housing (1), described substrate (2) periphery is tightly connected by fluid sealant and lamp housing (1), and power line and through hole also are provided with encapsulant between (6), wherein, described zero RunddichtringO is made by the raw material of following parts by weight:
Rubber 30-50 part ptfe micropowder 30-50 part molybdenum bisuphide 10-30 part
Sulphur and promoter 1-3 part reinforcing agent 10-30 part plasticizer 1-3 part
Activating agent 1-3 part age resistor 1-3 part coupling agent 5-10 part.
Compared to prior art, be provided with zero RunddichtringO (7) between the LED lamp lamp housing (1) of a kind of high-seal of the present invention and lampshade (4).This zero RunddichtringO (7) is made by weight by rubber, ptfe micropowder, molybdenum bisuphide, reinforcing agent, plasticizer, activating agent, age resistor, coupling agent, sulphur and promoter.Rubber has the performances such as good heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium, the mechanical performance that ptfe micropowder is good, electrical property, serviceability temperature scope and excellent chemical resistance, weatherability, lubricity, can greatly improve the original performance of rubber, and improved the wearability of rubber, improved service life.The performance of the raw materials such as molybdenum bisuphide, reinforcing agent, plasticizer, activating agent, age resistor, coupling agent, sulphur and promoter, make zero RunddichtringO for preparing have the performances such as good heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium in addition.Zero RunddichtringO is used between LED lamp lamp housing (1) and lampshade (4), not only improved the water proof and dust proof of LED lamp, also improve greatly the performances such as LED lamp heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium, improved LED lamp service life.
As preferably, described rubber is one or more in acrylonitrile-butadiene rubber, fluorubber, silicon rubber, ethylene propylene diene rubber.Rubber is a kind of valuable flexible macromolecular material that has, and the temperature range that it is wider gives less stress and will produce larger distortion in different medium, and this distortion can provide contact, compensates leakage-gap, thereby reaches the purpose of sealing.The acrylonitrile-butadiene rubber oil resistivity that the present invention selects is fabulous, and wearability is higher, and heat resistance is better, and bonding force is strong; Fluorubber has the chemical stability of height, resistance to elevated temperatures, anti-weather-aging property, medium-resistance; Silicon rubber has excellent thermo oxidative stability, weatherability and good electrical property; The ethylene propylene diene rubber chemical stability is good, and wearability, elasticity, ageing-resistant, corrosion-resistant, electrical insulation capability is superior.When zero RunddichtringO that these rubber are made plays sealing function in the LED of high-seal of the present invention lamp, the performances such as heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium of the LED lamp of this high-seal have also been improved.
The present invention has also added ptfe micropowder, and ptfe micropowder has good mechanical performance, electrical property, serviceability temperature wide ranges (approximately-200～+ 260 ℃), excellent chemical resistance, weatherability and good lubricity.Add ptfe micropowder in rubber, improved greatly the original performance of rubber, and improved the wearability of rubber, improved service life.
The present invention has also added molybdenum bisuphide simultaneously, and molybdenum bisuphide has the lamella microconfiguration that is similar to graphite, can effectively play the anti-attrition effect, and have graphite that can not compare with compatibility rubber.
As preferably, the percentage by weight of described sulphur and promoter is: sulphur 35-50%, and surplus is promoter; Described promoter is at least two kinds in captax, accelerant CZ, altax, diphenylguanidine, promoter TT, promoter ZDC, accelerant B Z, accelerant N A-22, promoter TRA, accelerator NS, promoter PX, promoter PZ, and described every kind of promoter accounts for the percentage no more than 40% of sulphur and promoter gross weight.Sulphur is the most most important vulcanizing agent, can make rubber molecular chain play cross-linking reaction, makes linear molecule form space network, and plasticity reduces, and elastic strength increases, and rubber mechanical property after sulfuration improves greatly.The speed that promoter can be accelerated ethylene propylene diene rubber and vulcanizing agent reaction reduces curing temperature, shortens cure time, reduces the vulcanizing agent consumption, makes simultaneously physical and mechanical properties, chemical property and the outward appearance of rubber also can obtain corresponding improvement.Due to the nature difference of promoter of the same race not, difference according to vulcanizing agent, can add simultaneously two or more promoter, be used for improving the overall performance of zero RunddichtringO rubber used, in order to reach best cure efficiency, 40% of the no more than sulphur of the weight of every kind of promoter and promoter gross weight.
As preferably, described activating agent is at least two kinds in zinc oxide, zinc carbonate, magnesia, stearic acid, zinc stearate or calcium stearate, and every kind of percentage no more than 60% that activating agent accounts for the activating agent gross weight.Activating agent is for increasing the activity of promoter, can reduce consumption, the shortening cure time of promoter, simultaneously can greatly improve sulphidity, the activating agent suitable according to the different choice of selected promoter, activating agent can add two or more simultaneously, for the properties of balance zero RunddichtringO, 60% of the no more than activating agent gross weight of the weight of every kind of activating agent.
As preferably, described age resistor is at least two kinds in anti-aging agent RD, antioxidant MB, antioxidant BLE, antioxidant SP, antioxidant 4020, and described every kind of age resistor percentage no more than 60% of accounting for the age resistor gross weight.Zero RunddichtringO is in long-term storage and use procedure, due to the effect that is subject to heat, oxygen, ozone, variable valency metal ions, mechanical stress, light, high-energy ray etc., and the erosion of other chemical substance and mould etc., can be clamminess gradually, hardening embrittlement or be full of cracks, Physical Mechanical variation, elasticity reduce, occur aging, in order to delay or to suppress this process, extend storage period and the service life of heat resistant type sealing ring, need to add age resistor in zero RunddichtringO uses rubber.To improve rubber performance variant due to every kind of age resistor, generally adds two or more age resistor, for guaranteeing the overall performance of zero RunddichtringO, 60% of the no more than age resistor gross weight of the weight of every kind of age resistor.
As preferably, described plasticizer is at least a in paraffin, chlorinated paraffin wax, plasticizer DEHP, plasticizer DINP or Plasticizer DBP.Add plasticizer in rubber, active force between rubber molecule is reduced, thereby reduce the vitrification point of rubber, give the cold resistance of the higher elasticity of rubber, raising rubber, improve plasticity and the mobility of rubber, be convenient to the forming operations such as calendering and extrusion.Common plasticizer all can play plasticization effect preferably, and multiple plasticizer uses jointly, can obtain the better rubber of performance by cooperatively interacting between plasticizer not of the same race, thereby produces better zero RunddichtringO of performance.
As preferably, described reinforcing agent is at least a in organobentonite, sodium bentonite, white carbon or carbon black.Reinforcing agent is for increasing the intensity of rubber.Organobentonite is the compound of a kind of inorganic mineral and organic ammonium; because montmorillonite in bentonite has the synusia structure; utilize intercalation technique that organic ammonium is inserted in its synusia structure and namely obtain organobentonite; therefore organobentonite is as the reinforcing agent in rubber compounding; compare the inorganic matters such as carbon black, potter's clay and inorganic bentonite; can have better compatibility with organic elastomeric material; the inorganic sheet of imvite has also played the oxygen iris action to rubber matrix, has effectively protected macromolecular chain segment.White carbon has superpower adhesion, tear-proof and heat-resistant ageing properties, can alternative carbon black carry out reinforcement in the colorful rubber goods, satisfy the needs of white or translucent product, also alternative part carbon black in the black rubber goods is to obtain high-quality rubber.
As preferably, described coupling agent is at least a in silane coupler 69, silane coupler KH99, titanate coupling agent KR-TTS, titanate coupling agent KR-38S.Coupling agent can improve the interface performance between rubber and inorganic additive or reinforcing agent, can improve the decentralization of other components of adding in rubber, improves processing characteristics, mechanical performance, hot property and electrical property.Coupling agent generally is comprised of two parts: a part is close inorganic group, can with inorganic filler or reinforcing agent effect; Another part is close organic group, can with the synthetic resin effect.The organic moiety of silane coupled agent molecule and the polymer molecule of rubber have stronger affinity or respond, and its hydrolyzable groups, the moisture of meeting the aqueous solution, airborne moisture or inorganic matter adsorption all can cause decomposition, have reactive preferably with the inorganic additive surface, therefore, effectively to increase the adding of silane coupler other components of adding in rubber and the dispersiveness of rubber base-material, thereby improve the heat resistance of zero RunddichtringO.Titanate coupling agent can form organic supramolecular layer unique on inorganic surfaces with the free proton reaction on inorganic additive surface, generation than low-surface-energy, viscosity is reduced greatly.Titanate coupling agent is added impact strength and the heat resistance that can improve rubber in rubber, and then improve the heat resistance of zero RunddichtringO.
Another object of the present invention is to provide the preparation method of the LED lamp of this high-seal.The method comprises the following steps:
S1: mixed rubber, ptfe micropowder, molybdenum bisuphide, reinforcing agent, plasticizer, activating agent, age resistor are placed in container by ratio of weight and the number of copies, stir, and add coupling agent, stir, and add sulphur and promoter, stir;
S2: above-mentioned compound is injected metal die, is that under 60-90 ℃ of condition, static pressure was finalized the design 20-40 minute in temperature;
S3: above-mentioned metal die is sent in high temperature sintering furnace, and sintering temperature is controlled at 380-400 ℃, and sintering time is 2-3 hour, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 10-15 hour cool time and makes zero RunddichtringO;
S4: be used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4) after zero RunddichtringO is polished, checks, cleans, dries, oiled.
The present invention has the following advantages:
1. the LED lamp of high-seal of the present invention is used for zero RunddichtringO to have improved the water proof and dust proof of LED lamp between LED lamp lamp housing (1) and lampshade (4).
2. the excellent performances such as heat resistance, resistance to ag(e)ing, corrosion resistance, weatherability and resistance to medium of the LED lamp of high-seal of the present invention, long service life.
Description of drawings
Fig. 1 is the structural representation of the LED lamp of a kind of high-seal of the present invention.
As shown in the figure: 1, lamp housing; 2, substrate; 3, LED light emitting module 4, lampshade; 5, radiator 6, through hole; 7, zero RunddichtringO 8, pressure ring.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with specific embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
take 30 parts of acrylonitrile-butadiene rubbers, 30 parts of ptfe micropowders, 10 parts of molybdenum bisuphide, sodium bentonite 50%, 10 parts of the reinforcing agents that carbon black 50% forms, paraffin 50%, 1 part, the plasticizer that plasticizer DEHP50% forms, zinc oxide 25%, magnesia 45%, 1 part of the activating agent that stearic acid 30% forms, anti-aging agent RD 50%, 1 part, the age resistor that antioxidant MB 50% forms is placed in container, stir, add silane coupler KH6950%, 5 parts of the coupling agents that titanate coupling agent KR-38S50% forms, stir, add 1 part of sulphur and promoter, wherein sulphur 45%, captax 12%, accelerant B Z25%, accelerant N A-2218%, stir, injecting metal die, is that under 60 ℃ of conditions, static pressure was finalized the design 40 minutes in temperature, send in high temperature sintering furnace, sintering temperature is controlled at 380 ℃, and sintering time is 3 hours, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 10 hours cool time and makes zero RunddichtringO, after being polished, check, clean, dry, oil, zero RunddichtringO is used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4).
Embodiment 2:
take 35 parts of fluorubber, 35 parts of ptfe micropowders, 15 parts of molybdenum bisuphide, organobentonite 50%, 15 parts of the reinforcing agents that carbon black 50% forms, chlorinated paraffin wax 50%, 2 parts, the plasticizer that plasticizer DEHP50% forms, zinc carbonate 20%, magnesia 30%, 1 part of the activating agent that stearic acid 50% forms, anti-aging agent RD 55%, 2 parts, the age resistor that antioxidant BLE 45% forms is placed in container, stir, add silane coupler 6950%, 7 parts of the coupling agents that titanate coupling agent KR-38S50% forms, stir, add 1 part of sulphur and promoter, wherein sulphur 35%, promoter ZDC15%, accelerant B Z25%, accelerant CZ 25%, stir, injecting metal die, is that under 70 ℃ of conditions, static pressure was finalized the design 35 minutes in temperature, send in high temperature sintering furnace, sintering temperature is controlled at 390 ℃, and sintering time is 2.5 hours, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 12 hours cool time and makes zero RunddichtringO, after being polished, check, clean, dry, oil, zero RunddichtringO is used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4).
Embodiment 3:
take 40 parts, silicon rubber, 50 parts of ptfe micropowders, 25 parts of molybdenum bisuphide, sodium bentonite 50%, 25 parts of the reinforcing agents that white carbon 50% forms, Plasticizer DBP 50%, 1 part, the plasticizer that paraffin 50% forms, zinc oxide 40%, zinc carbonate 30%, 2 parts of the activating agents that calcium stearate 30% forms, antioxidant SP 50%, 1 part, the age resistor that antioxidant BLE 50% forms is placed in container, stir, add silane coupler KH69 50%, 6 parts of the coupling agents that titanate coupling agent KR-TTS 50% forms, stir, add 1 part of sulphur and promoter, wherein sulphur 40%, promoter TRA 20%, accelerant B Z 15%, altax 25%, stir, injecting metal die, is that under 80 ℃ of conditions, static pressure was finalized the design 25 minutes in temperature, send in high temperature sintering furnace, sintering temperature is controlled at 400 ℃, and sintering time is 2 hours, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 13 hours cool time and makes zero RunddichtringO, after being polished, check, clean, dry, oil, zero RunddichtringO is used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4).
Embodiment 4:
take 50 parts of ethylene propylene diene rubbers, 35 parts of ptfe micropowders, 15 parts of molybdenum bisuphide, organobentonite 50%, 25 parts of the reinforcing agents that white carbon 50% forms, chlorinated paraffin wax 50%, 3 parts, the plasticizer that plasticizer DINP 50% forms, zinc carbonate 30%, magnesia 30%, 2 parts of the activating agents that zinc stearate 40% forms, antioxidant 4020 50%, 1 part, the age resistor that antioxidant MB 50% forms is placed in container, stir, add silane coupler 69 50%, 8 parts of the coupling agents that titanate coupling agent KR-TTS 50% forms, stir, add 2 parts of sulphur and promoter, wherein sulphur 50%, accelerator NS 15%, promoter PX 15%, accelerant N A-22 20%, stir, injecting metal die, is that under 70 ℃ of conditions, static pressure was finalized the design 35 minutes in temperature, send in high temperature sintering furnace, sintering temperature is controlled at 385 ℃, and sintering time is 2 hours, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 12 hours cool time and makes zero RunddichtringO, after being polished, check, clean, dry, oil, zero RunddichtringO is used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4).
The performance test results of table 1 embodiment 1-4 zero RunddichtringO
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| Shore A hardness/degree | 100 | 115 | 106 | 109 |
| Fault growth rate/% | 21 | 29 | 18 | 24 |
| Hot strength/MPa | 8.1 | 8.6 | 9.7 | 7.3 |
Zero RunddichtringO is greatly improved at aspect of performances such as hardness, fault growth rate, hot strengths as can be seen from Table 1.Zero RunddichtringO is used for the sealing that the LED lamp has not only improved the LED lamp, the service life of also having improved accordingly the LED lamp.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. the LED lamp of a high-seal, comprise lamp housing (1), substrate (2), be arranged on the LED light emitting module (3) on substrate (2), lampshade (4) and be arranged on radiator (5) under substrate (2), be equipped with the through hole (6) that the power supply source line passes on described substrate (2) and radiator (5), it is characterized in that: be provided with zero RunddichtringO (7) between described lamp housing (1) and lampshade (4), and be provided with between described lampshade (4) and lamp housing (1) for lampshade (4), zero RunddichtringO (7), the pressure ring (8) of the compression of lamp housing (1), described substrate (2) periphery is tightly connected by fluid sealant and lamp housing (1), and power line and through hole also are provided with encapsulant between (6), wherein, described zero RunddichtringO is made by the raw material of following parts by weight:
Rubber 30-50 part ptfe micropowder 30-50 part molybdenum bisuphide 10-30 part
Sulphur and promoter 1-3 part reinforcing agent 10-30 part plasticizer 1-3 part
Activating agent 1-3 part age resistor 1-3 part coupling agent 5-10 part.
2. the LED lamp of a kind of high-seal according to claim 1, is characterized in that, described rubber is one or more in acrylonitrile-butadiene rubber, fluorubber, silicon rubber, ethylene propylene diene rubber.
3. the LED lamp of a kind of high-seal according to claim 1, is characterized in that, the percentage by weight of described sulphur and promoter is: sulphur 35-50%, and surplus is promoter; Described promoter is at least two kinds in captax, accelerant CZ, altax, diphenylguanidine, promoter TT, promoter ZDC, accelerant B Z, accelerant N A-22, promoter TRA, accelerator NS, promoter PX, promoter PZ, and described every kind of promoter accounts for the percentage no more than 40% of sulphur and promoter gross weight.
4. the LED lamp of a kind of high-seal according to claim 1, it is characterized in that, described activating agent is at least two kinds in zinc oxide, zinc carbonate, magnesia, stearic acid, zinc stearate or calcium stearate, and every kind of percentage no more than 60% that activating agent accounts for the activating agent gross weight.
5. the LED lamp of a kind of high-seal according to claim 1, it is characterized in that, described age resistor is at least two kinds in anti-aging agent RD, antioxidant MB, antioxidant BLE, antioxidant SP, antioxidant 4020, and described every kind of age resistor percentage no more than 60% of accounting for the age resistor gross weight.
6. the LED lamp of a kind of high-seal according to claim 1, is characterized in that, described plasticizer is at least a in paraffin, chlorinated paraffin wax, plasticizer DEHP, plasticizer DINP or Plasticizer DBP.
7. the LED lamp of a kind of high-seal according to claim 1, is characterized in that, described reinforcing agent is at least a in organobentonite, sodium bentonite, white carbon or carbon black.
8. the LED lamp of a kind of high-seal according to claim 1, is characterized in that, described coupling agent is at least a in silane coupler 69, silane coupler KH99, titanate coupling agent KR-TTS, titanate coupling agent KR-38S.
9. the preparation method as the LED lamp of the described high-seal of claim 1-8 any one, is characterized in that, described the method comprises the following steps:
S1: mixed rubber, ptfe micropowder, molybdenum bisuphide, reinforcing agent, plasticizer, activating agent, age resistor are placed in container by ratio of weight and the number of copies, stir, and add coupling agent, stir, and add sulphur and promoter, stir;
S2: above-mentioned compound is injected metal die, is that under 60-90 ℃ of condition, static pressure was finalized the design 20-40 minute in temperature;
S3: above-mentioned metal die is sent in high temperature sintering furnace, and sintering temperature is controlled at 380-400 ℃, and sintering time is 2-3 hour, and after sintering was complete, metal die was cooled to room temperature in vacuum equipment, is about 10-15 hour cool time and makes zero RunddichtringO;
S4: be used for making the LED lamp of high-seal between lamp housing (1) and lampshade (4) after zero RunddichtringO is polished, checks, cleans, dries, oiled.
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| CN103756198B (en) * | 2013-12-04 | 2016-06-08 | 启东市富强橡塑制品厂 | Highly-wear-resistanfluororubber fluororubber formula and preparation method thereof |
| CN104151714A (en) * | 2014-07-15 | 2014-11-19 | 宁国天运橡塑制品有限公司 | Brake rubber seal cup |
| CN104791624A (en) * | 2015-03-30 | 2015-07-22 | 苏州锟恩电子科技有限公司 | Child floodlight |
| CN104791624B (en) * | 2015-03-30 | 2017-06-16 | 苏州锟恩电子科技有限公司 | A kind of children's illuminating lamp |
| CN105403256A (en) * | 2015-12-23 | 2016-03-16 | 无锡信大气象传感网科技有限公司 | Anti-shock and anti-aging temperature and humidity transmitter box |
| CN105606237A (en) * | 2015-12-23 | 2016-05-25 | 无锡信大气象传感网科技有限公司 | Temperature transmitter housing capable of heat dissipating and sealing |
| CN108047576A (en) * | 2018-01-25 | 2018-05-18 | 东莞市杜特橡胶制品有限公司 | A kind of high abrasion EPDM dynamic sealing materials |
| CN109867886A (en) * | 2019-02-26 | 2019-06-11 | 安徽沃尔顶密封工业有限公司 | A kind of wear-resisting O-ring seal of Novel compressive |
| CN114854137A (en) * | 2022-04-29 | 2022-08-05 | 贵州省材料产业技术研究院 | Rubber sealing composite material based on modified molybdenum disulfide and preparation method thereof |
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|---|---|
| CN103383077B (en) | 2015-08-26 |
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Address after: 315000 Zhujiaqiao village, jishigang Town, Haishu District, Ningbo City, Zhejiang Province Patentee after: Ningbo Aishi Electric Equipment Co.,Ltd. Address before: 315171 Zhejiang city of Ningbo province Yinzhou District Ji Shi Gang Zhen Zhu Jia Qiao Cun Patentee before: Ningbo Aishi Electric Equipment Co.,Ltd. |